class Person:
    def __init__(self, name, age):
        self.name = name
        self.age = age

    def __str__(self):
        return '我叫' + self.name + ", 今年：" + str(self.age) + " 岁"


p1 = Person("zhangsan", 20)
print('我叫' + p1.name + ", 今年：" + str(p1.age) + " 岁")
p2 = Person("李四", 25)
print(p2)
